| 一种自由进出JTAG菊花链的硬件设计方法 |
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| 引用本文： | 金彧,王彩莲,卢军平,冯桂萍,薛红平.一种自由进出JTAG菊花链的硬件设计方法[J].电脑开发与应用,2012,25(8):47-49. |
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| 作者姓名： | 金彧 王彩莲 卢军平 冯桂萍 薛红平 |
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| 作者单位： | 北方自动控制技术研究所,太原,030006 |
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| 摘 要： | 大多数数字处理器均带有JTAG接口,方便设计人员对处理器进行在线调试与程序下载。当信息处理单体机箱内存在多个带JTAG接口的处理器时,可以将这些处理器的JTAG接口连接成JTAG菊花链,如此,只需通过一个JTAG接口便能访问JTAG菊花链中的任何一个器件。在引出信息处理单体JTAG菊花链的设计后,针对菊花链的串联特性,提出一种自由进出菊花链的硬件设计方法,使对具有多处理器的信息处理单体中各个处理器程序调试方式更加灵活。
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| 关 键 词： | JTAG接口 自由进出 菊花链 |
A Hardware Design Method About Freedom Pass In and Out JTAG Daisy Chain |
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| JIN Yu
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WANG Cai-lian
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LU Jun-ping
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FENG Gui-ping
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XUE Hong-ping.A Hardware Design Method About Freedom Pass In and Out JTAG Daisy Chain[J].Computer Development & Applications,2012,25(8):47-49. |
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| Authors: | JIN Yu WANG Cai-lian LU Jun-ping FENG Gui-ping XUE Hong-ping |
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| Affiliation: | (North Automatic Control Technology Institute,Taiyuan 030006,China) |
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| Abstract: | Most digital processor has a JTAG interface,it is convenient for designer to debug program for the processor and download program to processor.When some Systems have multi-processor,it could use daisy chain model to connect these JTAG interfaces.So it could only use one external JTAG interface to access any processor in this JTAG daisy chain.In this article,based on daisy chain has an attribution in series,a freedom pass in and out JTAG daisy chain’s hardware design method is given,which let debug and download multi-processor’s program more convenience. |
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| Keywords: | JTAG interface freedom pass in and out daisy chain |
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